The U.S. Postal Service has asked for proposals to build a new delivery vehicle to replace their classic postal truck. Rut, Tanner and Adam answer the call, modify the used automobile of their choice, and put it through a series of tests to find out which could make the best new postal delivery vehicle.

With more Americans than ever flocking to cities, is the American dream of four wheeled freedom dying? Or is there a perfect city car? The guys navigate the concrete jungle and all the dangers that lurk within to find the perfect city car.